Checkmk Werk 14693: clustering: Fix clustering in case of failover

ID: 14693 Title: clustering: Fix clustering in case of failover Component: Checks & agents Level: 1 Class: Bug fix Version: 2.2.0i1 In case of failover, a clustered check showed "Item not found in monitoring data" instead of fetching the data from the second node. The problem was that the service was discovered on a particular node within the cluster and expected to persist on this node, instead of being fetched from other nodes in the event that a failover had occurred. This behavior was visible when the rule "Aggregation options for clustered services" was set on "Failover".